When the producers of the HBO series “Barry” asked Henry Winkler to audition for the role of Gene Cousineau, they assured him that he was on a short list. Winkler said he was willing, as long as the list didn’t include Dustin Hoffman. “Because he’s a movie star. He’d get it. If Dustin was on the list, I wasn’t going in. They said no. I said OK.”